White 9 x 8-inch sticker with the U.S. and Mexican flags and caption: San Diego County Fire Chiefs' Assn., Calif. Chiefs' Assn. 1974 Bombero Training Program. Every year since 1965 firefighters from Mexico are brought to the U.S. for training. The trips are free to the firefighters, and the program is funded by donations collected throughout the year. Each year the site of the training rotates between a Northern and Southern California city.